Rechargeable 3.7V Lithium Polymer Battery for Smart Bracelet
| Battery Type | 3.7V Li-Polymer battery, Polymer battery,Li-polymer battery |
| Rechargeable battery | |
| Model | BYT400920P |
| Condition | 100% New |
| Nominal voltage | 3.7V |
| Norminal Capacity | 55mAh (Available more capacity batteries) |
| Charging Voltage | 4.2V |
| Maximum charging current | 1C mA |
| Maximum discharging current | 2C mA |
| Discharging end voltage | 2.75V |
| PCB | Yes |
| Dimension(Thickness*Width*Length)mm | 4.0± 0.2 *09± 0.5*20± 0.5 (According to your request to design size) |
| Cycle Life | ≥500times |
| Charging Temp. | 0°C to 45°C |
| Standard Charging | 5.0hours(Ref.) |
| Rapid chargging | 3hours(Ref.) |
| Discharging Temp. | -20°C to 60°C |
| Storage Temp. | -20°C to 45°C (within 1month) |
| -20°C to 40°C(within 3month) | |
| -20°C to 35°C(within 6month) | |
| Certification | CE,UL,RoHS,ISO9001,ISO14001,FCC, MSDS |
| Application: | Smart Glasses / Smart Bracelet / Bracelet Cup/Bluetooth Earphone and others. |
- Environment-friendly,No Pollution
- No leakage and no explosion
- Low internal resistance
- Ultra-thin and small size
- High Energy Density
- High Voltage and power
- High Rate Charge/ Discharge
- With CE, KC, UN and RoHS approvals
- Long Cycle Life more than 500 times
- No Memory Effect
- Low Self-Discharge
- Thickness could be adjusted while width and height keep the same.
- Rich experienced R&D team
- Green product
- 12 months warranty
- High safety and high capacity
- OEM Capability
- Production capacity
- Large product line
- Reliability & reputation
- Reasonable price
- Prompt Delivery
- Quality Approvals
- Reputation
- Small orders accept
- Buyer's specifications/request accepte





- Telecommunications
- Cellular Phones, PHS, Bluetooth earphones
- Audio and Video Devices
- Digital cameras, Camcorders, Portable DVD, VCD, MD and CD players,MP3,MP4,GPS.
- Fire fighting, safety device, alarm monitoring,accident lighting,emergency lighting,miner lamps.
- Notebook computers, personal fascimile machines, PDAs.
- Electric Bicycles/Scooter/Motorcycle/Golf trolley
- Traffic and navigation signal lamp
Established in 2011,4,000 square meter and with over 500 employees. Daily output is 50,000pcs.
Certification: CE, UL, UN38.3, IEC62133,RoHS.
Approved by ISO9001,ISO14001
Strict quality control: All our products are subjest to incoming quality control on the materials, in process quality control,quality control on the finished goods, strict test before shipping.
Excellent quality: Advanced materials,can be recharged for 500 times,with built-in PCM to protect the who circuit.
Excellent after-sales service:Following up the order after shipping untile client get the goods.
Reasonable price:Manufacturer price,more competitive.

Our lithium ion batteries can be packed in PVC shrink/ PVC sleeve/ PET sleeve/ Blister card, then put into box/cartons/ pallets. Suitable container shipment.
And we can also pack the lihtium ion batteries with wire and connector as per customer‘s request.
We can accept customer's packing request.
Shipping port: Shenzhen, Hongkong
Below is normal packing photo for your reference.

1.Q:Are your factory?
A: Yes,we are professional factory for cell and battery packs.
2.Q:Can you offer sample?
A: Yes,we can offer it,below 3 pcs free, more than 3pcs negotiate.
3.Q: What's your MOQ(minimum order quantity)?
A: USD500.
4.Q: What's your packing methods?
A: Packed into cartons.
5.Q: What's your payment terms?
A: T/T 30% in advance & T/T 70% before shipment, L/C 100%, Paypal or negotiate according to the order status.
6.Q: What's your delivery time?
A: Received payment, Sample cell/battery need 3-5days, more quantity 2-3 weeks depend on order quantity.
7.Q:Shipping?
A:By air or sea or express(UPS,DHL,EMS,TNT.etc)
8.Q:Price Terms?
A:FOB,CIF,EXW,and other terms are available.
9 Q: Can we visit your factory?
A: Warmly welcome. Once we have your schedule, we will arrange the professional sales team and R&D to follow up your project.
Ms Silence Lee
Mob:0086-13510178694
Email:bytbattery.lee at
silence528 at
Skype: happygirl5281
Send Inquiry to This Supplier
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